CAP-25/15/440 Equivalent & Substitute Parts

Part Overview

The CAP-25/15/440 is a 40 µF, 440 V aluminum electrolytic capacitor with radial, can-style QC terminals, manufactured by Hartland Controls/Littelfuse. This component is classified as a motor run capacitor within the HCK series and is designed for HVAC applications. The part maintains an active product status with a rated lifetime of 60,000 hours at 70°C and operates across a temperature range of -40°C to 70°C. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within the specified parameter constraints.

Key Parameters

Parameter	Value
Capacitance	40 µF
Voltage - Rated	440 V
Tolerance	±3%
Lifetime @ Temperature	60,000 Hrs @ 70°C
Operating Temperature Range	-40°C ~ 70°C
Polarization	Polar
Package / Case	Radial, Can - QC Terminals
Mounting Type	Chassis Mount
Series	HCK, Motor Run
Applications	HVAC
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the CAP-25/15/440 is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

Capacitance: 40 µF (exact match required)
Voltage Rating: 440 V (exact match required)
Tolerance: ±3% (exact match required)

Mechanical Parameters:

Package / Case: Radial, Can - QC Terminals (exact match required)
Mounting Type: Chassis Mount (exact match required)

Performance Parameters:

Lifetime @ Temperature: 60,000 Hrs @ 70°C (exact match required)
Operating Temperature Range: -40°C ~ 70°C (exact match required)
Polarization: Polar (exact match required)

Environmental & Compliance:

Moisture Sensitivity Level: 1 (Unlimited) (exact match required)
Series Classification: HCK, Motor Run (exact match required)

All identified substitute parts meet these criteria without exception. Substitution is valid only when all parameters align precisely with the main part specification.

Parameter Comparison

Parameter	CAP-25/15/440	CAP-40/440	CAP-40/440R
Manufacturer	Hartland Controls/Littelfuse	Hartland Controls/Littelfuse	Hartland Controls/Littelfuse
Capacitance	40 µF	40 µF	40 µF
Voltage - Rated	440 V	440 V	440 V
Tolerance	±3%	±3%	±3%
Lifetime @ Temperature	60,000 Hrs @ 70°C	60,000 Hrs @ 70°C	60,000 Hrs @ 70°C
Operating Temperature Range	-40°C ~ 70°C	-40°C ~ 70°C	-40°C ~ 70°C
Polarization	Polar	Polar	Polar
Package / Case	Radial, Can - QC Terminals	Radial, Can - QC Terminals	Radial, Can - QC Terminals
Mounting Type	Chassis Mount	Chassis Mount	Chassis Mount
Series	HCK, Motor Run	HCK, Motor Run	HCK, Motor Run
Applications	HVAC	HVAC	HVAC
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active
Packaging	Box	Box	Box

Engineering Selection Recommendations

All three parts—CAP-25/15/440, CAP-40/440, and CAP-40/440R—maintain active product status with identical electrical, mechanical, and performance specifications. Each part is manufactured by Hartland Controls/Littelfuse and carries ECCN EAR99 classification, confirming compliance with export control standards.

Selection between these parts is based on inventory availability and application requirements:

CAP-25/15/440: 1,047 pieces in stock. Primary specification reference.

CAP-40/440: 1,087 pieces in stock. Direct electrical and mechanical equivalent with identical performance characteristics.

CAP-40/440R: 725 pieces in stock. Direct electrical and mechanical equivalent with identical performance characteristics.

All three parts are suitable for direct substitution in HVAC motor run applications requiring 40 µF capacitance at 440 V with ±3% tolerance and 60,000-hour lifetime rating at 70°C.

Frequently Asked Questions (FAQ)

Q: Can CAP-40/440 be used as a direct replacement for CAP-25/15/440?

A: Yes. CAP-40/440 is electrically and mechanically equivalent to CAP-25/15/440. Both parts share identical capacitance (40 µF), voltage rating (440 V), tolerance (±3%), lifetime (60,000 Hrs @ 70°C), operating temperature range (-40°C ~ 70°C), package type (Radial, Can - QC Terminals), and mounting configuration (Chassis Mount).

Q: What is the difference between CAP-40/440 and CAP-40/440R?

A: CAP-40/440 and CAP-40/440R are electrically and mechanically identical. Both maintain 40 µF capacitance, 440 V rating, ±3% tolerance, and all other specified parameters. The designation difference does not reflect a change in electrical performance or physical compatibility.

Q: Are these capacitors suitable for HVAC applications?

A: Yes. All three parts are classified for HVAC applications and are designated as motor run capacitors within the HCK series. Each part is rated for the thermal and electrical demands of HVAC motor circuits.

Q: What is the operating temperature range for these capacitors?

A: The operating temperature range for CAP-25/15/440, CAP-40/440, and CAP-40/440R is -40°C to 70°C. The rated lifetime of 60,000 hours applies at 70°C.

Q: Can these capacitors be used in applications requiring different voltage ratings?

A: No. These capacitors are rated for 440 V operation only. Use in circuits with different voltage specifications is not permitted.

Q: What does the ±3% tolerance specification mean?

A: The ±3% tolerance indicates that the actual capacitance value will be within 3% of the nominal 40 µF specification. This tolerance applies across the operating temperature range and rated voltage.

Q: Are these capacitors polarized?

A: Yes. All three parts are polar capacitors and must be installed with correct polarity orientation. Reverse polarity connection will result in component failure.

Q: What is the significance of the QC terminal designation?

A: QC terminals refer to quick-connect terminals on the capacitor can. This terminal style is standard for motor run capacitors in HVAC applications and ensures consistent mechanical and electrical connection in chassis-mounted configurations.

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